OK lemme give you a perspective from a VW eGolf and Tesla Model S (and soon 3) owner:
SALES: VW only sells eGolf in some states and at about 1/4 of all dealerships. When you go in to buy one, they try to unsell you. They do not understand them and don't want to sell them. Tesla sells wherever they can, and where they cannot... they sell online. They understand and are passionate about EVs.
SERVICE: You can only get VW eGolfs serviced at dealerships that are certified to service them, which is very few. That means the mechanics understand the car. But how often do you get to talk to a mechanic? No, you talk to a service manager. The VW service managers (and parts managers) do not have a clue about the eGolf. Tesla has service centers across the country, and their staff is passionate and knowledgeable about EVs.
SUPPORT: VW had a feature called Car-Net. It provides about the same functionality as the Tesla App. But they charge for it. And, if you ever call for any support or help, they have NO CLUE what an eGolf is. I spent a half hour with a moron on their support line to diagnose a HV battery issue, and they kept going through their ICE scripts telling me I needed to jump the car. I have experienced great support from Tesla. Quick and knowledgeable response every time. I know some others have not. But still better than a brick wall, which is VW (eV).
RESALE, END OF LEASE: I'm coming up on end of lease of my eGolf (which is being replaced by a Model 3 on Tuesday!!!!). VW Credit will of course take it back on the terms of the lease agreement. But they suggested I talk to the the local dealerships (LOL, only 1 66 miles away) to see if their used car dept wants to buy it. So, I have a 3 year old car in perfect condition with 7,000 miles on it. Response: "We don't want no eGolfs". That's verbatim. Tesla will offer to buy your car. You may not like the price, but at least they are in the game.
Sad. Because the eGolf is a very good car. In some ways, I even like better than my Tesla S. But VW has a MASSIVE culture change needed to have a prayer of succeeding with EVs. Much less upsetting Tesla.
Tesla ain't got anything to worry about here!!!